Of course they are... But some real well-pais science dudes decided that we can call animals with no endoskeleton inferior... By the way, you can not use most inferior(even if i used it) since it comes from latin and is already a comparaison PS: we do have our own light source: the light bulb

"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter